By default, window 7, Window Server 2008 R2, Window Vista and Window Server 2008 come with telnet service disabled. They do that is to hardern the operating system as well as to save the resources as most of the common user will never use this service at all.
To use this features, you must manually enabled it. Just following the following simple step to enabled it:
- Control Panel
- Programs And Features
- Turn Windows features on or off
- Check Telnet Client
- Hit OK
After that you can start Telnet via Command Prompt.